Okay, let's try this again. See inline for comments:
-----Original Message-----
From: Pierre-Alex [mailto:[EMAIL PROTECTED]]
Sent: December 13, 2000 12:26 PM
To: [EMAIL PROTECTED]; Cisco@Groupstudy. Com
Subject: RE: Configuration Register and Netboot Failure
Thanks for the 3COM URL, I am still perplex why my router is trying six time
to netboot when I have nothing in flash and nothing in NVRAM. According to
Cisco (Verbatim) the following should happen:
*-*-*-*
"If boot commands are in the configuration file, the router software
processes each boot command in sequence until the process is successful or
the end of the list is reached."
LAC: Step 1: The router sees "boot system <flash> <filename>" commands.
Boot commands ARE in the configuration file. The router software processes
each boot command in sequence until the process is successful or the end of
the list is reached.
*-*-*-*
"If the end of the list is reached without a file being successfully booted,
the router will retry the netboot commands up to six times. . ."
LAC: Step 2: The router reached the end of the boot system commands without
being able to successfully load a system image. The router tries netboot
commands for up to 6 times...
*-*-*-*
"unless the boot default ROM software if netboot fails bit (bit 13 of the
virtual configuration register) is set. If bit 13 is set, the system boots
the boot helper image found in boot Flash memory without any retries."
LAC: Step 3: We're now told that if bit 13 IS set, the 6 netboot attempts
WON'T be attempted.
*-*-*-*
LAC: This whole process hinges on the fact that boot system commands exist.
If boot system commands DO NOT EXIST, the system MUST ATTEMPT TO NET BOOT.
This happens whether or NOT bit 13 is set. This paragraph doesn't say
ANYTHING about the boot process if boot system commands DO NOT EXIST. Put a
"boot system" command in your startup config. Your netboot attempts will
cease... (NO NETBOOT attempts will occur)
LAC: Remember when I first started to correspond with you regarding boot
issues - you wanted to know why a net boot wasn't being attempted on your
router? I indicated that you had boot system commands set in your
startup-config file. Once you erased your config, it attempted the netboot
again. No boot system commands, netboot worked!
LAC: If you're still confused, I can try again - but please, let's take this
offline.
Please look at the following. My register is set to 0x2102 (bit 13 is set so
there should have been only one try with netboot)
Cisco4000#erase flash
Erasing the flash filesystem will remove all files! Continue? [confirm]
Erasing device... eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee ...erased
Erase of flash: complete
Cisco4000#config t
Enter configuration commands, one per line. End with CNTL/Z.
Cisco4000(config)#config-register 0x2102
Cisco4000(config)#exit
Cisco4000#r
06:17:01: %SYS-5-CONFIG_I: Configured from console by consoleeload
System configuration has been modified. Save? [yes/no]: no
Proceed with reload? [confirm]
06:17:43: %SYS-5-RELOAD: Reload requested
System Bootstrap, Version 4.14(7), SOFTWARE
Copyright (c) 1986-1994 by cisco Systems
4000 processor with 32768 Kbytes of main memory
--- System Configuration Dialog ---
Refer to the 'Getting Started' Guide for additional help.
Default settings are in square brackets '[]'.
Configuring interface IP parameters for netbooting:
Configuring interface Serial0:
Is this interface in use? [yes]: no
Configuring interface Serial1:
Is this interface in use? [yes]: no
Configuring interface TokenRing0:
Is this interface in use? [yes]: no
Configuring interface Ethernet0:
Is this interface in use? [yes]:
Media-type 10BaseT or AUI? [10BaseT]:
IP address for this interface: 192.168.0.1
Number of bits in subnet field [0]:
Class C network is 192.168.0.0, 0 subnet bits; mask is 255.255.255.0
Booting cisco2-4000 ............ [timed out]
Network load failed
System Bootstrap, Version 4.14(7), SOFTWARE
Copyright (c) 1986-1994 by cisco Systems
4000 processor with 32768 Kbytes of main memory
--- System Configuration Dialog ---
Refer to the 'Getting Started' Guide for additional help.
Default settings are in square brackets '[]'.
Configuring interface IP parameters for netbooting:
Configuring interface Serial0:
Is this interface in use? [yes]:
THIS CONTINUES 5 MORE TIMES BEFORE IT ENTERS THE BOOT HELPER MODE!
-----Original Message-----
From: Leigh Anne Chisholm [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 13, 2000 10:24 AM
To: Pierre-Alex; Cisco@Groupstudy. Com
Subject: RE: Configuration Register and Netboot Failure
I looked up the reference you make with respect to setting bit 13--it's a
confusing sentence but what it's saying, is that if you have boot system
commands set in your configuration files, a net boot will NOT be attempted
if bit 13 is set if no boot system commands are able to load a valid IOS
image. If no boot system commands exist, the system WILL try 6 times to
netboot. You need to take the whole paragraph in in order to understand the
context of the statement...
I've been going through Cisco's site to find the xmodem commands that can be
used from within ROM monitor. Some documents lead you to believe that this
functionality is available on all routers (it notes that the 3600 uses a
different command than other Cisco series routers), but I've found a few
documents that state that xmodem and ymodem is available on the Cisco 1600
series and Cisco 3600 series routers only. Nothing like consistency in
documentation...
Try TFTP'ing the image instead. As many have pointed out, 3COM's got one of
the best TFTP server products (and it's free). Go download 3CDemon
(3CDv2r10.zip) from
http://support.3com.com/software/utilities_for_windows_32_bit.htm. It can
be used on a Windows 95 box - and you can use subdirectories to organize
your files, and do probably everything you expressed that you wanted to do
in a previous email.
Hope this helps get you on your way!
-- Leigh Anne
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Pierre-Alex
Sent: December 13, 2000 4:35 AM
To: Cisco
Subject: Configuration Register and Netboot Failure
My router keep on trying six times to use netboot despite the fact that bit
13 is set. Cisco says "...the router will retry the netboot commands up to
six times unless the boot default ROM software if netboot fails bit (bit 13
of the virtual configuration register) is set. If bit 13 is set, the system
boots the boot help image found in boot Flash memory without any retries"
THIS IS WHAT I HAVE:
Bit# Configuration register option settings:
15 Diagnostic mode disabled
14 IP broadcasts do not have network numbers
13 Boot default ROM software if network boot fails
12-11 Console speed is 9600 baud
10 IP broadcasts with ones
08 Break disabled
07 OEM disabled
06 Ignore configuration disabled
03-00 Boot file is cisco2-4000 (or 'boot system' command)
Thank you
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